Cylindrical symmetric volumetric machine
US-11384762-B2 · Jul 12, 2022 · US
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of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F01C1/10 |
| Official title | of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member |
| Display label | of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 3 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Internal gear pump
US-11319811-B2 · May 3, 2022 · US
Internal gear pump
US-2021095566-A1 · Apr 1, 2021 · US
Rotary engine
US-10954848-B2 · Mar 23, 2021 · US
Surface texture and groove designs for sliding contacts
US-2020300091-A1 · Sep 24, 2020 · US
Rotary fluid pressure device with drive-in-drive valve arrangement
US-2020270993-A1 · Aug 27, 2020 · US
Cylindrical symmetric volumetric machine
US-2020217320-A1 · Jul 9, 2020 · US
Rotary fluid pressure device with drive-in-drive valve arrangement
US-10590771-B2 · Mar 17, 2020 · US
Rotary engine
US-2018334955-A1 · Nov 22, 2018 · US
Pneumatic stepper motor
US-10024160-B2 · Jul 17, 2018 · US
Positive displacement motor with radially constrained rotor catch
US-9982485-B2 · May 29, 2018 · US
Rotary fluid pressure device with drive-in-drive valve arrangement
US-2017362938-A1 · Dec 21, 2017 · US
Hydraulic motor
US-9784107-B2 · Oct 10, 2017 · US
Positive displacement motor with radially constrained rotor catch
US-9695638-B2 · Jul 4, 2017 · US
Positive Displacement Motor With Radially Constrained Rotor Catch
US-2017145748-A1 · May 25, 2017 · US
Gerotor apparatus for a quasi-isothermal Brayton cycle engine
US-9382872-B2 · Jul 5, 2016 · US
Gerotor pump, a gerotor motor and a gerotor transmission system
US-9377033-B2 · Jun 28, 2016 · US
Gerotor apparatus having outer gerotor with strenghthening members
US-2016138590-A9 · May 19, 2016 · US
Gerotor apparatus for a quasi-isothermal brayton cycle engine
US-2015152732-A1 · Jun 4, 2015 · US